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Thank you so much for all the help!Message: 6
Date: Mon, 24 Feb 2020 09:24:00 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] GLM DOSS questions
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <62cf0ae8-3d78-aa44-7a44-17cd603a8934@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
On 2/21/2020 4:01 AM, Ferraro, Pilar wrote:
Yes, but if you are going to use -1, you need to keep track of that when
????????External Email - Use Caution
Dear Freesurfer experts,
I?ve just completed a GLM analysis in Freesurfer and I?d like to be
sure that all the steps I?ve performed are the right ones.
My analysis is looking at age related changes in cortical thickness in
one group of patients, after regressing out the effects of disease
duration. I obviously assume an inverse relationship between age and
cortical thickness so that older age would be associated with cortical
thickness reductions in specific brain regions.
To test this hypothesis with Freesurfer I?ve used a GLM DOSS design.
I?ve generated a fsgd file with the first column being the list of
patients, the second column the age of patients, and the third column
the disease duration.
Then I?ve run the mris_preproc command.
Afterward,? I?ve generated 2 contrast matrices (one for the left and
one for the right hemisphere) with the following structure: 0 -1 0.
1 question. Is the contrast matrices structure I?ve chosen the most
appropriate one for the hypothesis I?d like to test?
you specify the sign (but you are using abs so it does not matter).
Also, you don't need different fsgd and contrast files for each hemisphere.
for visualization, you can use whatever threshold you want. But if you
Then, I?ve run the glm analysis using the mri_glmfit command.
To visualize the results I?ve used the freeview -f command and set the
overlay_threshold to 1,5 instead of 4, cause I was interested in
looking at all results significant at p < 0.05.
2 question. Is the overlay_threshold I?ve used the correct one?
are going to use monte carlo simulations, then you need p<.001. If you
want to keep p<.05, then you have to do permutation.
>> Sounds good, thanks for the explanation!abs is an unsigned test. If you have an aprior hypothesis, then you can
Lastly, I was interested in looking at my results after Montecarlo
correction, so I?ve run the simulation using the mri_glmfit-sim command.
However, here I?ve changed few options:
mri_glmfit-sim \
? --glmdir lh.dur.glmdir \
? --cache 4 neg \ (here I?ve changed to 1,5 since I was interested
again at a P value < 0,05 and not < 0.0001 and I?ve changed the neg
option with abs since I was interested in absolute values identified
through the previously run analysis)
? --cwp? 0.05\
? --2spaces
3 question. Are the edits I made to the command correct? It is not
perfectly clear to me which one should be the preferred sign for the
analysis (neg, pos or abs?).
set the sign to that. Eg, if you are expecting the age slope to be
negative, then you could choose negative (or in your case positive since
you flipped the sign in the contrast)
In the end, in order to visualize the Montecarlo corrected resultsIt will show all the clusters that are at p<.05 corrected.
I?ve used again the Freeview -f command and again I?ve sent the
overlay threshold to 1,5 since I was interested in all significant
clusters at P < 0,05.
4 question. Again, this threshold is the correct one for my purpose?
I have one last question concerning the Montecarlo simulation. AreI'm recommending that everyone use permutation at this point. MC can
there any cases in which you would suggest to do not use it since it
would not be an appropriate correction?
generate inlfated false positives
Sorry for the long email but I needed to report all the steps in order
to get an answer.
Many thanks for all the help you?ll be able to provide.
Best,
Pilar Ferraro
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Message: 7
Date: Mon, 24 Feb 2020 09:25:38 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] surfreg function
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <6075b7ad-ad3a-c483-2208-ee6fd048f5d0@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
it is ok to spec -surfreg, but is not necessary in this case
mris_preproc will change the name when you spec a target subject
(eventhough the says that the default is sphere.reg)
On 2/21/2020 6:20 AM, Marina Fern?ndez wrote:
????????External Email - Use Caution
Hi Doug,
Thank you for your replay.
I understood that if I did not specify "--surfreg
my_avg_subject.sphere.reg" ?mri_preproc was going to use the original
file (sphere.reg), because in the help of mri_preproc it mentions this:
--surfreg SurfReg : default is sphere.reg
With this in mind,do you think it would not be necessary to specify it
in mris_preproc?
What is the difference between sphere.reg and my_avg_subject.sphere.reg?
Best wishes,
Marina
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Message: 8
Date: Mon, 24 Feb 2020 09:26:14 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] how to convert the registered file (.lta)
into NIfTI format in PETsurfer
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <362fe77d-51d2-2e69-1e5d-e273321b0dde@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
Not sure what you are trying to do. An lta file is a matrix and nifti is
a format for storing images.
On 2/21/2020 7:52 AM, Kate Marvel wrote:
????????External Email - Use Caution
Hi All,
How do you convert the registered file (.lta) into NIfTI format in
PETsurfer.
Thanks,
_______________________________________________
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Message: 9
Date: Mon, 24 Feb 2020 09:31:30 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] Optseq2 help needed
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <c4cecc27-ad82-b2bb-b174-0a6a9b20490e@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
By default, optseq2 assumes that you want to perform an FIR analysis
where you get an average for each post-stimulus time point so that you
can create a waveform. This is in contrast to assuming the shape to the
hemodyn respnse where you only estimate a single value (the amplitude).
By default, the time between FIR waveform points is the TR, but you can
perform sub-TR estimation by setting the dPSD to less than the TR. The
problem is that every estimate you make reduces the efficienecy. So,
assuming a shape is more efficient than an FIR because it only has one
estimate. An FIR with dPDS=TR is more efficient than dPSD=TR/2 because
there are half as many estimates. Probably when you go to analyze the
data you will use an assumed shape, and then you will get the efficiency
back.
On 2/21/2020 9:43 AM, Gergely Darnai wrote:
????????External Email - Use Caution
Dear Developers,
I am planning to run PVT (psychomotor vigilance task) in fMRI using
event related design. This is an extremely simple reaction time task:
participant has to respond to the appeared geometric shape as quickly
as possible. The key feature of this paradigm is that we will have
fluctuating and quite rapid event presentation times (ranging between
300 and 500 msec). Another important information is that we will use
FSL FEAT for the evaluation. We decided to use opseq2 to optimize the
design with the following parameters:
optseq2 --ntp 150 --tr 2 --psdwin 0 20 --ev evt1 1 45 --nkeep 3 --o
exp --nsearch 10000 --tnullmin 3 --tnullmax 11 --repvar 10
Although with this design I get quite satisfying efficiency and VRF
scores I do not understand that if I decrease dPSD why does it have
significant negative effect on efficiency and VRF. Could you explain
this? If I understand well, this is the only option to shift the onset
of the event from the scanning points, and I would assume that if
there is fluctuation in time between scanning points and stimuli
presentation, it would help to "catch" the hemodynamic response easier
(if the stimulus onset always goes together with the scans, we can
always catch the same timepoints of the HRF). Did I misunderstand
something? If I use FSL that is based on HRF estimation (and not on
FIR), do these parameters (dPSD) and scores (efficiency & VRF) have
meaning and function at all? My last question is related to event
duration. Although I have fluctuating and short events, as you can see
I chose 1 sec (because it has to be the integer multiple of the dPSD).
Is it problematic?
Thank you for your suggestions,
Gergely
-----------------------------------------
Gergely Darnai PhD
Department of Behavioural Sciences
Medical School, University of P?cs
Phone: +36/72/536-256
Fax: +36/72/536-257
H-7624 Szigeti u. 12, P?cs, Hungary
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Message: 10
Date: Mon, 24 Feb 2020 09:33:41 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] Creating the pial surface of the cerebellum:
how to let the mris_make_surfaces to push the pial surface to the
boundary
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <04884b22-53f5-2c7a-e07b-0aa0209532e6@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
Try setting -max XXX
where XXX is the maximum allowable thickness. It is default to 5, so try
something large
On 2/21/2020 11:36 AM, CiRong Liu wrote:
????????External Email - Use Caution
Dear experts of the freesurfer,
I was trying to create the white matter and pial surfaces of
the?cerebellum of the marmoset, based on ultra-high (80um) resolution
ex-vivo images.
I manually segment the cerebellum into the white matter and the gray
matter and change the header information to 1mm.
Based on the manual?segmented files, I created white matter surfaces
(rh.orig).
I tried to use the mris_make_surfaces to expand the white matter to
create the matched pial surface.
However, the /mris_make_surfaces/ failed to push the surface enough.
See the attached files and screenshots.
I tried smoothing the segmentation, enhancing the contrasts, and
tested different expert option (for example: -max_csf 0.1
-min_gray_at_csf_border 1)
This was this best I got, but still cannot get an optimal result (not
pushed enough):
/mris_mask_surfaces -max_csf 0.1 -min_gray_at_csf_border 1 -orig_wm
orig -orig_pial orig -noaseg -noaparc -T1 ceb_sm marmosetceb rh /
Since I have already manually segmented the cerebellum, *is there a
way to force the /mris_make_surfaces/ to expand to the boundary of the
image?*
The files can be download to replicate what I did:
https://pitt.box.com/s/6269a9mnwbs6zi0azn08dn55u47yfa7i
Thank you very much!
Best Regards, CiRong Liu
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Message: 11
Date: Mon, 24 Feb 2020 09:36:58 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] Version Beta 7.0
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <51a3e156-250a-4679-07e4-c2deaebbb7be@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
We have not released stable 7 yet. Technically we have not released
7beta yet but only because I need to make the announcement and write up
some docs.
On 2/24/2020 2:46 AM, Victor Montal Blancafort wrote:
????????External Email - Use Caution
Freesurfer developers,
I have seen from the download webpage, that there is already a v7.0
beta version.
Since we were planing to re-run a lot of individuals 1000+ with
Freesurfer6, I was wondering if you could provide timings regarding
the release of stabe 7.0.
Also, could you briefly explain the main changes in this version? We
are mainly interested on cortical thickness analysis, so... there will
be big differences in the recon-all pipeline?
Thank you in advance!
V.
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Message: 12
Date: Mon, 24 Feb 2020 09:41:09 -0500
From: "Douglas N. Greve" <dgreve@mgh.harvard.edu>
Subject: Re: [Freesurfer] cluster size threshold
To: <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <b66960f1-e9c7-4ccf-86db-4c6444bfbca2@mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
You need to find the correct CDF file, eg, if the final FWHM is 12, it
would be in
$FREESURFER_HOME/average/mult-comp-cor/fsaverage/lh/cortex/fwhm12/abs/th30/mc-z.cdf
To get the FWHM look in glmdir/fwhm.dat and round down
in the mc-z.cdf file, find the row where the MaxClustCDF drops below
.05/2=.025, then look at the MaxClustBin for the critical cluster size
On 2/24/2020 6:49 AM, Elisa Castaldi wrote:
????????External Email - Use Caution
Dear experts,
To perform a Monte Carlo based cluster correction, I have run the
following line:
mri_glmfit-sim --glmdir glmdir --mczsim 3 abs --cwp 0.05 --2spaces
--a2009s
I need to figure out which is the minimum number of voxels required
for a cluster to be considered significant.
In other words, which is the cluster _size_ threshold in this case?
Where can I find this information?
Thanks
Elisa
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Message: 13
Date: Mon, 24 Feb 2020 08:47:49 -0600
From: Kate Marvel <kmarvel54@gmail.com>
Subject: Re: [Freesurfer] how to convert the registered file (.lta)
into NIfTI format in PETsurfer
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Message-ID:
<CAG9yhu5o0ehKA-2oLLovmUFC2M1SrPowGioDiesR2Dsbna4N3A@mail.gmail.com>
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Hi Douglas,
Is there a way to save the registered PET image in NIfTi format instead of
.lta?
Kate
On Mon, Feb 24, 2020 at 8:26 AM Douglas N. Greve <dgreve@mgh.harvard.edu>
wrote:
Not sure what you are trying to do. An lta file is a matrix and nifti is a
format for storing images.
On 2/21/2020 7:52 AM, Kate Marvel wrote:
External Email - Use Caution
Hi All,
How do you convert the registered file (.lta) into NIfTI format in
PETsurfer.
Thanks,
_______________________________________________
Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
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--
kate
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Message: 14
Date: Mon, 24 Feb 2020 09:50:25 -0500 (EST)
From: Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] how to convert the registered file (.lta)
into NIfTI format in PETsurfer
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Message-ID:
<alpine.LRH.2.21.2002240949160.22762@door.nmr.mgh.harvard.edu>
Content-Type: text/plain; charset="utf-8"
Hi Kate
the .lta format is for a linear registration (in ascii). YOu can just cat
it to see the contents - it is not a PET image (which will be stored in
.mgz or .nii). mri_convert or mri_vol2vol can be used to apply the
registration and/or change the output format (if you specify file.nii or
file.nii.gz it will write in Nifti)
cheers
Bruce
On Mon, 24 Feb 2020, Kate Marvel wrote:
????????External Email - Use Caution????????
Hi Douglas,
Is there a way to save the registered PET image in NIfTi format instead of
.lta?
Kate
On Mon, Feb 24, 2020 at 8:26 AM Douglas N. Greve <dgreve@mgh.harvard.edu>
wrote:
Not sure what you are trying to do. An lta file is a matrix and
nifti is a format for storing images.
On 2/21/2020 7:52 AM, Kate Marvel wrote:
????????External Email - Use Caution????????
Hi All,
How do you convert the registered file (.lta) into NIfTI format
in PETsurfer.
Thanks,
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
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Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
--
kate
------------------------------
Message: 15
Date: Mon, 24 Feb 2020 14:50:05 +0000
From: Adam Rytina <adam.rytina@outlook.cz>
Subject: Re: [Freesurfer] Apply transformation
To: "Greve, Douglas N.,Ph.D." <DGREVE@mgh.harvard.edu>,
"freesurfer-bounces@nmr.mgh.harvard.edu"
<freesurfer-bounces@nmr.mgh.harvard.edu>,
"freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Message-ID:
<AM0PR0602MB3377640CAED11562C48DB7349AEC0@AM0PR0602MB3377.eurprd06.prod.outlook.com>
Content-Type: text/plain; charset="iso-8859-2"
External Email - Use Caution
Hello all,
is it possible to transform a binary mask (a transformation matrix 4x4 acquired by registration of an anatomical and a diffusion image) and change a final FOV by specifying a diffusion reference image? Or the transform can be applied only on structural image?
I am still struggling with the transformation of my binary mask as explained below.
Thanks a lot
Regards
Adam
________________________________
Od: Adam Rytina <adam.rytina@outlook.cz>
Odesl?no: st?eda 19. ?nora 2020 8:11
Komu: Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edu>
P?edm?t: Fw: [Freesurfer] Apply transformation
Hello,
please, could you help me with this case? What am I doing wrong?
Thanks a lot
________________________________
Od: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> za u?ivatele Adam Rytina <adam.rytina@outlook.cz>
Odesl?no: sobota 15. ?nora 2020 19:52
Komu: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
P?edm?t: Re: [Freesurfer] Apply transformation
External Email - Use Caution
Thanks, unfortunately, I am making some mistake but I don?t know where.
First of all I run autorecon1 on my anatomical T1 data (the orig.mgz image is saved in /usr/local/freesurfer/subjects/anatomical).
Then in the /usr/local/freesurfer/data I run mri_robust register command of the T1 and diffusion DWI data. The registration.lta file is saved here.
Now I add an anatomical mask "3D_T1_brain_mask.nii" to the same folder /usr/local/freesurfer/data that I want to transform to the anatomical T1 space.
In the same /usr/local/freesurfer/data I run : "mri_vol2vol --lta registration.lta --mov 3D_T1_brain_mask.nii --o f-in-anat3.nii --s anatomical --fstarg"
To sum up, I am aiming to apply a transformation matrix on the T1 anatomical brain mask and transform it to the T1 space defined by 3D T1 image.
The problem is this command transforms orig.mgz file (a skull stripped T1 image) instead of 3D_T1_brain_mask.nii.
Please, do you know where I make mistake?
Thanks a lot
________________________________
Od: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> za u?ivatele Douglas Greve <dgreve@mgh.harvard.edu>
Odesl?no: sobota 15. ?nora 2020 17:15
Komu: freesurfer@nmr.mgh.harvard.edu <freesurfer@nmr.mgh.harvard.edu>
P?edm?t: Re: [Freesurfer] Apply transformation
Yes, mri_vol2vol
On 2/15/20 11:07 AM, Adam Rytina wrote:
External Email - Use Caution
Hello all,
I want to apply the saved transformation (a transformation matrix 4x4 acquired by registration of an anatomical and a diffusion image) on my input anatomical mask and change a final FOV by specifying a diffusion reference image (its voxels size). It means to apply the same command as the command ApplyXFM in FSL FLIRT. Does this option exist also in Freesurfer?
Thanks a lot
Regards
Adam
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Message: 16
Date: Mon, 24 Feb 2020 15:54:49 +0100
From: Marina Fern?ndez <marina.fdez.alvarez@gmail.com>
Subject: [Freesurfer] skull stripping problem
To: freesurfer@nmr.mgh.harvard.edu
Message-ID:
<CAALjZmedHxapja0jycg2bF=JC81kOCqHytmcnM2ziwrX2T_gUA@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
External Email - Use Caution
Dear Freesurfeer experts,
After running the recon-all, a part of the temporal lobe of one subject was
removed.
I used the watershed algorithm to be less agressive in the skull stripping
step:
recon-all -skullstrip -wsthresh 35 -clean-bm -no-wsgcaatlas -subjid sub_001
And the problem was solved in the brainmask.mgz volume because I can see
the temporal lobe completely, but the surfaces are still displaced. In
order to correct the surfaces I used the white matter edit tool but there
is no change after correcting WM and running the recon-all -autorecon2-wm
-autorecon3. I also used control points and but the following error was
shown in the terminal when I run the recon-all -autorecon2-cp -autorecon3:
recon-all -s sub_001 existed with errors
I detected that there are very high values in the white matter of this part
of the temporal lobe (even 132), maybe it has something to do. What can I
do to solve the problem with this subject?
Thank you very much in advance.
Best regards,
Marina.
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Message: 17
Date: Mon, 24 Feb 2020 09:04:52 -0600
From: Kate Marvel <kmarvel54@gmail.com>
Subject: Re: [Freesurfer] how to convert the registered file (.lta)
into NIfTI format in PETsurfer
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Message-ID:
<CAG9yhu7rcBLfPeMo-L9p7iaN7O54Gjm2PB9tJjMtDvSH-Q4kqw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
External Email - Use Caution
Hi Bruce,
Thank you very much Bruce.
Kate
On Mon, Feb 24, 2020 at 8:50 AM Bruce Fischl <fischl@nmr.mgh.harvard.edu>
wrote:
Hi Kate
the .lta format is for a linear registration (in ascii). YOu can just cat
it to see the contents - it is not a PET image (which will be stored in
.mgz or .nii). mri_convert or mri_vol2vol can be used to apply the
registration and/or change the output format (if you specify file.nii or
file.nii.gz it will write in Nifti)
cheers
Bruce
On Mon, 24 Feb 2020, Kate Marvel wrote:
of
External Email - Use Caution
Hi Douglas,
Is there a way to save the registered PET image in NIfTi format instead
.lta?Freesurfer mailing list
Kate
On Mon, Feb 24, 2020 at 8:26 AM Douglas N. Greve <dgreve@mgh.harvard.edu
wrote:
Not sure what you are trying to do. An lta file is a matrix and
nifti is a format for storing images.
On 2/21/2020 7:52 AM, Kate Marvel wrote:
External Email - Use Caution
Hi All,
How do you convert the registered file (.lta) into NIfTI format
in PETsurfer.
Thanks,
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--
kate
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kate
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Message: 18
Date: Mon, 24 Feb 2020 15:50:26 +0000
From: "Russo, Andrew William" <AWRUSSO@mgh.harvard.edu>
Subject: [Freesurfer] samseg permissions error
To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Message-ID:
<BL0PR04MB4593810C0E71B357FAEF1011E8120@BL0PR04MB4593.namprd04.prod.outlook.com>
Content-Type: text/plain; charset="iso-8859-1"
Hello Freesurfer Developers,
I am trying to use the "samseg" function in /usr/local/freesurfer/dev but do not have permission to access the directory /usr/local/freesurfer/dev/subjects/fsaverage. Is this a restricted directory?
ValueError: file /usr/local/freesurfer/dev/subjects/fsaverage/mri/orig.mgz does not exist
ERROR: fs_time run_samseg
I did not find any related issues with samseg on the archive and I have had it work in the past. Before running samseg I sourced the freesurfer environment:
export FREESURFER_HOME=/usr/local/freesurfer/dev
source $FREESURFER_HOME/SetUpFreeSurfer.sh
(Using Freesurfer-Linux-centos6_x86_64-stable-pub-v5.3.0)
Thank you in advance,
Andrew
____________
Andrew Russo
Clinical Research Coordinator
Multiple Sclerosis Imaging Lab
Massachusetts General Hospital
149 13th Street | Boston, MA 02129
617-726-7531
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Message: 19
Date: Mon, 24 Feb 2020 16:15:20 +0000
From: "Harrigan, Timothy P." <Timothy.Harrigan@jhuapl.edu>
Subject: [Freesurfer] Registration error
To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <1fb1864f806f4eb89ba47f72b3d2a4be@aplex11.dom1.jhuapl.edu>
Content-Type: text/plain; charset="us-ascii"
External Email - Use Caution
Hi,
I'm trying to learn to use Freesurfer to see if I can use it for some academic work on TBI. I downloaded it to a spare laptop at home, and filled out the registration form, and I got a message that stated "Registration Error: Spammer. Go Away."
How could I address this?
Thanks
Tim
Timothy P. Harrigan ScD
Research and Exploratory Development Division
Johns Hopkins University Applied Physics Laboratory
Phone: 240-228-5943
Cell/Text: 240-280-9444
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End of Freesurfer Digest, Vol 192, Issue 32
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